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A robust method to filter various types of artifacts on long duration EEG recordings

Archive ouverte : Communication dans un congrès

Boudet, Samuel | Peyrodie, Laurent | Gallois, Philippe | Vasseur, Christian

Edité par HAL CCSD

International audience. EEG is a system used to measure electrical brain activity using multiple electrodes placed on the scalp. Unfortunately, the signals can be easily contaminated by noises called artifacts. These can be generated by various actions such as eye blinks, eye movements, muscle activities or small electrode movements. This paper presents a global artifact removal method corresponding to an evolution of the AFOP method (Adaptive Filtering by Optimal Projection) in order to improve its stability. This evolution automatically filters ocular, muscular and heart beat artifacts. The results are validated on long duration EEG recordings containing pathological activities. An expert analysis shows that the cerebral signal is well conserved while a lot of artifacts are removed.

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